发明名称 |
Process for preparing aromatic bisphosphates |
摘要 |
A process for preparing aromatic bisphosphates includes: a first step of reacting an aromatic monohydroxy compound having a steric hindrance group at the ortho position, with a phosphorus oxyhalide in the presence of a Lewis acid catalyst (a) to yield a reaction mixture containing diarylphosphorohalidate, and a second step of reacting the reaction mixture of the first step with an aromatic dihydroxy compound in the presence of a Lewis acid catalyst (b) to obtain an aromatic bisphosphate, wherein the aromatic monohydroxy compound and the phosphorus oxyhalide are reacted in a molar ratio of 2.0:1.0-1.1 in the first step, and the reaction mixture of the first step is subjected to a distillation treatment before the reaction of the second step, thereby obtaining the aromatic bisphosphate of high purity.
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申请公布号 |
US5880308(A) |
申请公布日期 |
1999.03.09 |
申请号 |
US19960761376 |
申请日期 |
1996.12.09 |
申请人 |
DAIHACHI CHEMICAL INDUSTRY CO., LTD. |
发明人 |
KAWATA, SHIGERU;HIRAO, KIYOHARU;NOGUCHI, KAZUO |
分类号 |
B01J27/06;C07B61/00;C07F9/09;C07F9/12;C08K5/52;C08K5/523;C09K21/12;(IPC1-7):C07F9/12 |
主分类号 |
B01J27/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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